Zonneschijn — 2009
| Month | De Haan | Oudenburg | Difference |
|---|---|---|---|
| Jan | – | 134.2 uren | – |
| Feb | – | 128.5 uren | – |
| Mar | – | 271.1 uren | – |
| Apr | – | 315.5 uren | – |
| May | – | 351.1 uren | – |
| Jun | – | 389.3 uren | – |
| Jul | – | 407.6 uren | – |
| Aug | – | 375.9 uren | – |
| Sep |
| – |
| 293.6 uren |
| – |
| Oct | – | 192.9 uren | – |
| Nov | – | 154.1 uren | – |
| Dec | – | 146.9 uren | – |